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Which of the following best describes a weak entity set in an ER model?

In the Relational model, data is represented as:

Identify attributes for each category, where attributes are from the ER diagram illustrated in Figure 2. Figure 2. ER diagram for a spa salon. 

Identify complex attributes in the entity set illustrated in Figure 2. Figure 2. Entity set agent.  

Find an error in the reduction from ER to relational diagram illustrated in Figure 3. (a) ER diagram                                                                                                                               (b) Relational diagram Figure 3. ER and associated relational diagram.

In the BCNF decomposition algorithm, suppose you use a functional dependency to decompose a relation schema into and . What primary and foreign-key constraint do you expect to hold on the decomposed relations?

Suppose we are given a dataset and need to design a database from it. In other words, we begin with a single relation schema containing all relevant attributes. Instead of developing an ER diagram, we decided to break this schema into multiple smaller, well-structured schemas based on functional dependencies. What is the process called when we break single schema into multiple smaller, well-structured schemas? 

We reduced entity sets and relationship set to a set of relation schemas as illustrated in Figure 1. (a) ER diagram                                                                                                       (b) Relational diagram                 Figure 1. ER diagram (a) and associated relational diagram.   How can we further optimize relational database design?

Which type of anode was invented specifically to dissipate heat from one spot during x-ray production? 

_________ bonds form between amino acids during elongation.